/*
 * Copyright 2017 Google Inc.
 *
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */

#ifndef SkDashImpl_DEFINED
#define SkDashImpl_DEFINED

#include "src/core/SkPathEffectBase.h"

class SkDashImpl : public SkPathEffectBase {
public:
    SkDashImpl(const SkScalar intervals[], int count, SkScalar phase);

protected:
    ~SkDashImpl() override;
    void flatten(SkWriteBuffer &) const override;
    bool onFilterPath(SkPath *dst, const SkPath &src, SkStrokeRec *, const SkRect *, const SkMatrix &) const override;

    bool onAsPoints(PointData *results, const SkPath &src, const SkStrokeRec &, const SkMatrix &,
        const SkRect *) const override;

    DashType onAsADash(DashInfo *info) const override;

private:
    SK_FLATTENABLE_HOOKS(SkDashImpl)

    bool computeFastBounds(SkRect *bounds) const override
    {
        // Dashing a path returns a subset of the input path so just return true and leave
        // bounds unmodified
        return true;
    }

    SkScalar *fIntervals;
    int32_t fCount;
    SkScalar fPhase;
    // computed from phase

    SkScalar fInitialDashLength;
    int32_t fInitialDashIndex;
    SkScalar fIntervalLength;

    using INHERITED = SkPathEffectBase;
};

#endif
